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Codebook for NHGIS data file 'nhgis0055_ds184_20115_2011_county'
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Contents
    - Data Summary
    - Data Dictionary
    - Citation and Use
 
Additional documentation on NHGIS data sources is available at: 
    https://www.nhgis.org/documentation/tabular-data 
 
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Data Summary
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Year:             2007-2011
Geographic level: County (by State)
Dataset:          2011 American Community Survey: 5-Year Data [2007-2011, Block Groups & Larger Areas]
   NHGIS code:    2007_2011_ACS5a
   NHGIS ID:      ds184
Breakdown(s):     Geographic Subarea:
                     Total area (00)
Data type(s):     (E) Estimates
                  (M) Margins of error
 
Tables:
 
1. Race
   Universe:    Total population
   Source code: B02001
   NHGIS code:  MNU
 
2. Ratio of Income to Poverty Level in the Past 12 Months
   Universe:    Population for whom poverty status is determined
   Source code: C17002
   NHGIS code:  MPV
 
3. Median Value (Dollars)
   Universe:    Owner-occupied housing units
   Source code: B25077
   NHGIS code:  MU2
 
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Data Dictionary
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Context Fields 
        GISJOIN:     GIS Join Match Code
        YEAR:        Data File Year
        REGIONA:     Region Code
        DIVISIONA:   Division Code
        STATE:       State Name
        STATEA:      State Code
        COUNTY:      County Name
        COUNTYA:     County Code
        COUSUBA:     County Subdivision Code
        PLACEA:      Place Code
        TRACTA:      Census Tract Code
        BLKGRPA:     Block Group Code
        CONCITA:     Consolidated City Code
        AIANHHA:     American Indian Area/Alaska Native Area/Hawaiian Home Land Code
        RES_ONLYA:   American Indian Area/Alaska Native Area (Reservation or Statistical Entity Only) Code
        TRUSTA:      American Indian Reservation with Trust Lands; trust lands only Code
        AITSCEA:     Tribal Subdivision/Remainder Code
        ANRCA:       Alaska Native Regional Corporation Code
        CBSAA:       Metropolitan Statistical Area/Micropolitan Statistical Area Code
        CSAA:        Combined Statistical Area Code
        METDIVA:     Metropolitan Division Code
        NECTAA:      New England City and Town Area Code
        CNECTAA:     Combined New England City and Town Area Code
        NECTADIVA:   New England City and Town Area Division Code
        UAA:         Urban Area Code
        CDCURRA:     Congressional District (111th Congress) Code
        SLDUA:       State Legislative District (Upper Chamber) Code
        SLDLA:       State Legislative District (Lower Chamber) Code
        ZCTA5A:      5-Digit ZIP Code Tabulation Area Code
        SUBMCDA:     Subminor Civil Division Code
        SDELMA:      School District (Elementary)/Remainder Code
        SDSECA:      School District (Secondary)/Remainder Code
        SDUNIA:      School District (Unified)/Remainder Code
        PUMA5A:      Public Use Microdata Sample Area (PUMA) Code
        BTTRA:       Tribal Census Tract Code
        BTBGA:       Tribal Block Group Code
 
Data Type (E):
    Estimates
 
        NAME_E:      Area Name
 
    Table 1:     Race
    Universe:    Total population
    Source code: B02001
    NHGIS code:  MNU
        MNUE001:     Total
        MNUE002:     White alone
        MNUE003:     Black or African American alone
        MNUE004:     American Indian and Alaska Native alone
        MNUE005:     Asian alone
        MNUE006:     Native Hawaiian and Other Pacific Islander alone
        MNUE007:     Some other race alone
        MNUE008:     Two or more races
        MNUE009:     Two or more races: Two races including Some other race
        MNUE010:     Two or more races: Two races excluding Some other race, and three or more races
 
    Table 2:     Ratio of Income to Poverty Level in the Past 12 Months
    Universe:    Population for whom poverty status is determined
    Source code: C17002
    NHGIS code:  MPV
        MPVE001:     Total
        MPVE002:     Under .50
        MPVE003:     .50 to .99
        MPVE004:     1.00 to 1.24
        MPVE005:     1.25 to 1.49
        MPVE006:     1.50 to 1.84
        MPVE007:     1.85 to 1.99
        MPVE008:     2.00 and over
 
    Table 3:     Median Value (Dollars)
    Universe:    Owner-occupied housing units
    Source code: B25077
    NHGIS code:  MU2
        MU2E001:     Median value (dollars)
 
Data Type (M):
    Margins of error
 
        NAME_M:      Area Name
 
    Table 1:     Race
    Universe:    Total population
    Source code: B02001
    NHGIS code:  MNU
        MNUM001:     Total
        MNUM002:     White alone
        MNUM003:     Black or African American alone
        MNUM004:     American Indian and Alaska Native alone
        MNUM005:     Asian alone
        MNUM006:     Native Hawaiian and Other Pacific Islander alone
        MNUM007:     Some other race alone
        MNUM008:     Two or more races
        MNUM009:     Two or more races: Two races including Some other race
        MNUM010:     Two or more races: Two races excluding Some other race, and three or more races
 
    Table 2:     Ratio of Income to Poverty Level in the Past 12 Months
    Universe:    Population for whom poverty status is determined
    Source code: C17002
    NHGIS code:  MPV
        MPVM001:     Total
        MPVM002:     Under .50
        MPVM003:     .50 to .99
        MPVM004:     1.00 to 1.24
        MPVM005:     1.25 to 1.49
        MPVM006:     1.50 to 1.84
        MPVM007:     1.85 to 1.99
        MPVM008:     2.00 and over
 
    Table 3:     Median Value (Dollars)
    Universe:    Owner-occupied housing units
    Source code: B25077
    NHGIS code:  MU2
        MU2M001:     Median value (dollars)
 
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Citation and Use of NHGIS Data
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        IPUMS National Historical Geographic Information System: Version 12.0 
        [Database]. Minneapolis: University of Minnesota. 2017. 
        http://doi.org/10.18128/D050.V12.0

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        The College of William and Mary and the Minnesota Population Center.
        School Attendance Boundary Information System (SABINS): Version 1.0.
        Minneapolis, MN: University of Minnesota 2011.

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